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Finding the Fourth Proportional to 18,591.87, 27,887.62 and 4,551.96

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Solution

The fourth proportional to 18,591.87, 27,887.62 and 4,551.96 is: 6,827.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,591.87 : 27,887.62 = 4,551.96 : x
  2. Step 2: Convert to fraction form
    18,591.87/27,887.62 = 4,551.96/x
  3. Step 3: Cross multiply
    18,591.87x = 27,887.62 × 4,551.96
  4. Step 4: Simplify right side
    18,591.87x = 126,943,330.74
  5. Step 5: Solve for x
    x = 126,943,330.74/18,591.87
  6. Step 6: Final answer
    x = 6,827.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.